Hi, My requirement is to check for same field value from a list of items. in the test case mentioned below, I want to verify that all the applicants are of same age. I am running the rule as mentioned below. The 'then' part does not execute. Please suggest. Thanks for your time. public class Applicant { private String name; private int age; private BigDecimal amount; // getter and setters } rule "age" when $list : List(); forall( $app : Applicant( $age : age) from $list Applicant( this == $app, age == $age ) ); then System.out.println("success" ); end // setting data in working memory Applicant applicant1 = new Applicant("aaaa", 20, new BigDecimal(16.50)); Applicant applicant2 = new Applicant("aaaa", 20, new BigDecimal(16.50)); Applicant applicant3 = new Applicant("aaaa", 20, new BigDecimal(16.50)); List<Applicant> list = Arrays.asList(new Applicant[] { applicant1, applicant2, applicant3 }); ksession.insert(list); Regards, Tushar -- View this message in context: http://drools-java-rules-engine.46999.n3.nabble.com/using-forall-to-valid... Sent from the Drools - User mailing list archive at Nabble.com.